The new GTX 680 Phantom features a custom PCB with 6-phase DrMOS VRM desing that should provide additional overclocking potential as well more stability. The new GTX 680 Phantom ended up overclocked to 1084MHz for base and 1150MHz for boost clock while 2GB of GDDR5 memory paired up with 256-bit memory interface is working at 1575MHz (6300MHz effective).